Adjust GMAC1 clock lines skew to maximum (+960 ps) and TXD lines skew
to minimum (-420 ps), to improve signal integrity.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>